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6–11
Principles of Operation
CMX Controller Board
The heart of the printer is the CMX controller board, which monitors and
directs all printer functions. The controller board receives and processes all
data from the host computer, builds the printable images, controls all motors,
and drives the hammer springs. Except for the power supply and final
hammer drive circuits, all logic and drive circuitry for the printer are
contained on the controller board.
The CMX controller board consists of two functional units: the Data
Controller (DC) and the Engine Controller (EC).
The DC is responsible for:
♦ Host I/O
♦ Operator I/O
♦ Security Interface
♦ Print Image Generation
♦ Overall High Level (Logical) Control
The EC is responsible for:
♦ Print Mechanism Operation
♦ Print Mechanism Fault Monitoring
♦ Power Shutdown/Power Saving Modes
The EC and DC communicate through semaphore registers. The DC receives
host and operator input and returns dot images and LCD messages to buffers
in memory. Image data are passed to the EC upon request, are processed,
then sent to the hammer bank. The EC synchronizes paper, ribbon, platen,
and shuttle motion as it feeds dot data to the hammer drivers. Figure 6–11
summarizes this architecture.
- Text and Graphics Printers 1
- FCC Notice 2
- Table of Contents 5
- Maintenance Overview 9
- About the Printer 10
- About This Manual 11
- Related Documents 12
- Safety Notices 14
- Hinweise zur Sicherheit 15
- Controls and Indicators 16
- 1–9Maintenance Overview 17
- 1–10 Maintenance Overview 18
- 1–11Maintenance Overview 19
- 1–12 Maintenance Overview 20
- Scheduled Maintenance 21
- Interval Procedure 22
- Inspecting the Printer 23
- Cleaning the Printer 24
- Card Cage 28
- Fan Assembly 28
- Troubleshooting 29
- Introduction 30
- Troubleshooting Aids 30
- LCD Messages 31
- Displayed Message Explanation 32
- Solution 32
- Displayed Message 33
- CLEAR PAPER JAM 38
- CLOSE PLATEN 39
- COIL HOT 40
- 3–13Troubleshooting 41
- DRVR CIR BAD* 42
- 3–15Troubleshooting 43
- FIRMWARE ERROR 44
- HAM. COIL OPEN * 45
- HB NOT INSTLD * 46
- LO DRV. SHORT 47
- LOAD PAPER 48
- POWER SUPPLY HOT 49
- 3–22 Troubleshooting 50
- PRINTER HOT 51
- RIBBON DRIVE 52
- Serial Interface Messages 53
- SHUTTLE JAM 54
- SOFTWARE ERROR * 55
- UP DRV. SHORT 56
- Troubleshooting Table 58
- 3–31Troubleshooting 59
- 3–32 Troubleshooting 60
- 3–33Troubleshooting 61
- Printer Confidence Check 62
- Diagnostic Printer Tests 63
- 3–37Troubleshooting 65
- Step Key Result Notes 65
- 3–38 Troubleshooting 66
- Step NotesResultKey 66
- Hidden Diagnostic Menu 67
- 3–40 Troubleshooting 68
- Figure 3–1. Diagnostics Menu 68
- Hex Code Printout 69
- 3–42 Troubleshooting 70
- ASCII Character Set 71
- 3–44 Troubleshooting 72
- NOTE: Left side adjustment 85
- 29. Close the printer cover 96
- Hammer Phasing Adjustment 97
- Adjustment 98
- Installing Software 99
- FILENAME.EXE 100
- Message Explanation 101
- Required 101
- Explanation 102
- Adjustment Procedures 104
- Replacement Procedures 105
- Organization of This Chapter 108
- Belt, Paper Feed Timing 109
- ± 2 inch–pounds 110
- ± 0.23 NSm) 110
- Belt, Platen Open 111
- Installation 112
- Replacement Procedures and 113
- Illustrated Parts List 113
- Circuit Board: CMX Controller 114
- Circuit Board: Power Supply 116
- Circuit Breaker 117
- Control Panel Assembly 118
- Removal 119
- Cover Assembly, Shuttle 120
- Fan Assembly, Card Cage 121
- Fan Assembly, Cabinet Exhaust 122
- Fan Assembly, Hammer Bank 123
- CMX Controller Board 126
- Motor Assembly, Paper Feed 127
- IMPORTANT 128
- Motor Assembly, Platen Open 129
- Motor Assembly, Ribbon Drive 131
- Paper Ironer 132
- Paper Path 133
- ± 2 inch–pounds (2.26 ± 0.23 137
- Resistors, Terminating 139
- Controller 140
- Ribbon Guide Assembly (L/R) 141
- Ribbon Hub 142
- Shaft, Splined 143
- Shaft, Support 145
- Shuttle Frame Assembly 146
- Spring Assembly, Gas 148
- Removal 149
- Tractor (L/R) 154
- List of Figures 155
- Part No 156
- (Order No.) 156
- Description Notes 156
- Power Cords 158
- Figure 5–10. Covers 163
- Figure 5–13. Tractor Shafts 169
- Figure 5–14. Platen 171
- Figure 5–16. Circuit Breaker 175
- Principles of Operation 177
- Line Matrix Printing 178
- Printing Mechanism 181
- Paper Transport System 183
- Ribbon Transport System 184
- Control Panel 186
- Data Controller 189
- Engine Controller 192
- Analog Drive Circuitry 193
- Power Supply Board 194
- Printer Interface 195
- Graphics 195
- Wire Data 197
- INTERCONNECTION DIAGRAM 198
- POWER DISTRIBUTION DIAGRAM 199
- Wire DataA–4 200
- A–5Wire Data 201
- Wire DataA–6 202
- A–7Wire Data 203
- Wire DataA–8 204
- Cable Assembly 205
- Centronics/Dataproducts I/O 205
- DescriptionPart No 205
- 153364–901 205
- Cable Routing, Mechanism Base 206
- A – AView 206
- 154470–901 207
- 152625–901 208
- 152624–901 209
- Cable Assembly, Card Cage Fan 210
- 152422–901 210
- Cable Assembly, Control Panel 211
- 152440–901 211
- Cable Assembly, Exhaust Fan 212
- 152424–901 212
- 152421–901 213
- 152423–901 214
- Cable Assembly, MPU 215
- 152425–901 215
- Wire DataA–20 216
- 152420–901 217
- FD–51852–01 218
- FD–51851–01 219
- SECTION A–A 219
- FD–51853–01 220
- Printer Specifications 221
- Duty Cycle 222
- Ribbon Specifications 222
- Paper Specifications 223
- Printer Dimensions 224
- Environmental Characteristics 224
- Electrical Characteristics 225
- Interfaces 226
- Printing Rates 227
- B–8 Printer Specifications 228
- Metric Conversion Tables 229
- Torque Table 231
- Noise Suppression Devices 241
- Control Panel Cable Assembly 242
- Parallel I/O Cable Assembly 242
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